By Sarah Begley for Time

The sinking of the Titanic may be the most infamous naval disaster in history, and the torpedoing of the Lusitania the most infamous in wartime. But with death counts of about 1,500 and 1,200 respectively, both are dwarfed by what befell the Wilhelm Gustloff, a German ocean liner that was taken down by a Soviet sub on Jan. 30, 1945, killing 9,343 people—most of them war refugees, about 5,000 of them children.

The victims of the worst maritime tragedy in history were not only Germans, but also Prussians, Lithuanians, Latvians, Poles, Estonians and Croatians. World War II was drawing to an end, and the Soviet army was advancing. Though it would be months before the final fall of the Nazi regime, it was clear the end was coming—and they were desperate to escape before things came to a head. Read More